Two Degrees of Freedom Controller Design of a Grid-Side Converter for Injecting Wind Energy Into the Grid

This paper presents the control system design, simulation, and implementation of a grid side-converter, which is used to inject wind energy into the grid. The design considers the high nonlinear behavior of the DC link voltage by proposing a two degrees of freedom controller with anti-windup strategy. The performance of the proposed control system is evaluated by simulations carried out in MATLAB. Experimental results demonstrate the advantages of the proposed control system in overcoming the DC voltage nonlinearities. Finally, simulation and experimental results are compared and discuss.